Method for producing a finishing layer containing a window for a portable data storage medium and said finishing layer

a technology of portable data storage medium and finishing layer, which is applied in the direction of coatings, instruments, electric digital data processing, etc., can solve the problems of difficult design of the finishing layer located above the display, difficult to obtain good optical quality, and high cost, so as to prevent blockages between semi-finished goods

Active Publication Date: 2014-04-29
GIESECKE & DEVRIENT MOBILE SECURITY GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0008]The invention is based on the approach of producing a finishing film primarily by means of printing technology. Said approach is based on the idea that it is possible, by

Problems solved by technology

Obtaining good optical quality is thereby very challenging from the production engineering aspect.
A fundamental problem in the production of chip cards with displays, particularly corresponding to the requirements of the relevant ISO standard 7810, is complying with the maximum allowable t

Method used

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  • Method for producing a finishing layer containing a window for a portable data storage medium and said finishing layer
  • Method for producing a finishing layer containing a window for a portable data storage medium and said finishing layer
  • Method for producing a finishing layer containing a window for a portable data storage medium and said finishing layer

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Embodiment Construction

[0015]FIG. 1 shows a schematic perspective oblique view of a portable data storage medium 100 according to the invention, having an active display element 20 visible through a window 104 formed in the surface 72 of the data storage medium 100 from a viewing side S indicated by arrows. The portable data storage medium 100 comprises, as described below, a plurality of layers connected to each other in the form of a layer stack, wherein at least the surface 72 is flat and the two surfaces 72, 82 are typically, but not necessarily, substantially plane-parallel to each other. The portable data storage medium 100 typically has the form of a chip card having outer dimensions prescribed by relevant standards, primarily the ISO standard 7810; when implemented as a chip card according to ISO 7810, as indicated in FIG. 1, the portable data storage medium 100 has a height, for example, of no greater than 768 μm. The portable data storage medium 100 can, however, also have different outer dimens...

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Abstract

A method for producing a finishing layer containing a window (104) for a portable data storage medium, in particular a chip card, and the use of the method for producing a data storage medium. A transparent plastic-based support layer (28) is used and an opaque color layer (30) is applied on the support layer in a screen printing process, wherein the color layer (30) has a recess (32) having the dimensions of the window (104). A first layer (40) of a transparent primer is then screen printed onto the color layer and a design color layer (50) is then applied in an offset printing process onto the first layer. A second layer (60) of a transparent primer is applied in an offset printing process on top of the design color layer (50) and a transparent finish (70) is finally applied onto the second layer (60).

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a method for producing a finishing layer containing a window, allowing a display element disposed beneath the finishing layer to be observed when used in a portable data storage medium. The invention further relates to a portable data storage medium having an active display element and a method for the production thereof. The invention particularly relates to a chip card having a display.[0003]2. Related Art[0004]Chip cards having displays and methods for the production thereof are known in great numbers. For example, a production method can be taken from WO 2008 / 147061 A1, according to which a board having electronic components, namely: the display, the IC with a contact pad, a battery, and a pushbutton including required wiring, is placed in a frame and potted with synthetic resin, so that a planar structure is created, the top side of which comprises the display. The synthetic resin is cured ...

Claims

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Application Information

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IPC IPC(8): G06F17/00G06K19/00G06K19/06H01L23/02
CPCG06K19/07749G06K19/077G06K19/07703
Inventor HUBER, PETERKOHL, KLAUSROMAN, FABIKSCHELLENBERGER, CHRISTINASCHROPF, MANUELA
Owner GIESECKE & DEVRIENT MOBILE SECURITY GMBH
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